Question

Write true or false.

1. The output energy of a good machine is always greater than input energy.

2. Vacuum is an opaque medium.

3. Birds fly in the sky do not cast their shadows.

4. The non-movable parts of a machine are generally iron.

5. A weighing balance is an example, of liver of first order.


don't write faltu answer​

Answer 1

• True
• True
• True
• False
• True

Answer 2

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• ᴛʜᴇ ᴏᴜᴛᴘᴜᴛ ᴇɴᴇʀɢʏ ᴏғ ᴀ ɢᴏᴏᴅ ᴍᴀᴄʜɪɴᴇ ɪs ᴀʟᴡᴀʏs ɢʀᴇᴀᴛᴇʀ ᴛʜᴀɴ ɪɴᴘᴜᴛ ᴇɴᴇʀɢʏ. False

• ᴠᴀᴄᴜᴜᴍ ɪs ᴀɴ ᴏᴘᴀϙᴜᴇ ᴍᴇᴅɪᴜᴍ. True

• ʙɪʀᴅs ғʟʏ ɪɴ ᴛʜᴇ sᴋʏ ᴅᴏ ɴᴏᴛ ᴄᴀsᴛ ᴛʜᴇɪʀ sʜᴀᴅᴏᴡs. True

• ᴛʜᴇ ɴᴏɴ-ᴍᴏᴠᴀʙʟᴇ ᴘᴀʀᴛs ᴏғ ᴀ ᴍᴀᴄʜɪɴᴇ ᴀʀᴇ ɢᴇɴᴇʀᴀʟʟʏ ɪʀᴏɴ. Fasle

• A ᴡᴇɪɢʜɪɴɢ ʙᴀʟᴀɴᴄᴇ ɪs ᴀɴ ᴇxᴀᴍᴘʟᴇ, ᴏғ ʟɪᴠᴇʀ ᴏғ ғɪʀsᴛ ᴏʀᴅᴇʀ. True